<template>
    <div id="app">
        <p>{{message}}</p>
        <input type="text" v-model="message">
        <button @click="handleClick">btn</button>
    </div>
</template>

<script>
export default {
  
  data () {
      return {
       message: 'hellow world',
  }},
  methods: {
      handleClick(){
          alert('click');
      }
  }
}
</script>

<style>

</style>